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The principal reason airframe stress work still uses hand idealisations alongside finite element models is

  • A.They make the load path explicit
  • B.They are more accurate than finite element models
  • C.Finite element software is unavailable
  • D.They are required by regulation

Answer: A

A hand idealisation forces an engineer to decide what carries what, and that understanding is what makes a finite element result interpretable. The two are complementary, and a result nobody can explain is a result nobody should trust.

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